| 
 | 
| Error: | Cause: | 
|---|---|
| ARG_COPY | argument copy failed | 
| CONVERT_PROC | conversion process failed to convert value | 
| CREATE_ONLY | can specify option only at creation time | 
| DUPLICATE_NAME | object named already exists | 
| FIELD_TYPE | unknown argument type | 
| FILE_READ | could not read the server local file | 
| FONT_WIDTHS | can not determine font widths for columns setting | 
| HAS_CALLBACK | already has callback; trying to set callback when one already specified | 
| INVALID_ARGS | wrong number of arguments; argument not recognized; or argument options not recognized | 
| INVALID_SHADOWTYPE | shadowType value is not one of valid set | 
| INVALID_TYPES | argument is not convertible to correct type | 
| MISSING_ARG | missing an expected argument | 
| NEED_CALLBACK | need to set the callback to call | 
| NEED_OPTION | no option was specified | 
| NO_BUTTON | named widget button does not exist | 
| NO_CHILDREN | widget has no children | 
| NO_PIXMAP | cannot find or create given pixmap | 
| NO_SET | cannot set this option | 
| NO_SUCH_OPTION | unrecognized option option | 
| NO_VALUE_SET | specified -noCallback without setting -value | 
| NO_WIDGET | no widget corresponding to widgetName given | 
| NOT_GETTABLE | the option is not gettable | 
| NOT_SETTABLE | the option is not settable | 
| NOT_OPTION | option is not valid for this widget | 
| OBJECT_NAME | need widget name | 
| OPTION_SYNTAX | syntax error in option argument optionArg | 
| PACKING_ARG | invalid packing argument | 
| PARENT_NAME | no matching parent name found | 
| PARENT_TYPE | parent is incorrect type | 
| TOPIC_OR_TREE | must specify either -topic or -tree | 
| TOPITEMPOSITION_VALUE | invalid value for topItemPosition (less than 0 or greater than the number of items in the list) |